void HandlePixbufLoaded(PixbufCache Cache, PixbufCache.CacheEntry entry)
{
Pixbuf result = entry.ShallowCopyPixbuf();
int order = (int)entry.Data;
if (result == null)
{
return;
}
// We have to do the scaling here rather than on load because we need to preserve the
// Pixbuf option iformation to verify the thumbnail validity later
int width, height;
PixbufUtils.Fit(result, ThumbnailWidth, ThumbnailHeight, false, out width, out height);
if (result.Width > width && result.Height > height)
{
// Log.Debug ("scaling");
Pixbuf temp = result.ScaleSimple(width, height, InterpType.Nearest);
result.Dispose();
result = temp;
}
else if (result.Width < ThumbnailWidth && result.Height < ThumbnailHeight)
{
// FIXME this is a workaround to handle images whose actual size is smaller than
// the thumbnail size, it needs to be fixed at a different level.
Pixbuf temp = new Pixbuf(Colorspace.Rgb, true, 8, ThumbnailWidth, ThumbnailHeight);
temp.Fill(0x00000000);
result.CopyArea(0, 0,
result.Width, result.Height,
temp,
(temp.Width - result.Width) / 2,
temp.Height - result.Height);
result.Dispose();
result = temp;
}
Cache.Update(entry, result);
InvalidateCell(order);
}
protected CollectionGridView(IBrowsableCollection collection)
{
Collection = collection;
Collection.Changed += (c) => {
QueueResize();
};
Collection.ItemsChanged += (c, args) => {
foreach (int item in args.Items)
{
if (args.Changes.DataChanged)
{
UpdateThumbnail(item);
}
InvalidateCell(item);
}
};
Name = "ImageContainer";
Cache = new PixbufCache();
Cache.OnPixbufLoaded += HandlePixbufLoaded;
}